Content protection device, content protection method, and computer readable medium

A content protection method comprising;

• storing one or more pieces of use restriction definition information in which at least use restriction conditions to restrict use of contents are defined;
• monitoring writing of an access log, and when the access log is written, comparing a use manner in which content specified by the access log is used and the use restriction conditions included in the use restriction definition information;
• and
• if a result of the comparing by the comparison unit indicates that the use manner meets any of the use restriction conditions, restricting at least a same kind of use as the use manner.

A computer readable medium storing a program causing a computer to execute a process for restricting use of contents, the process comprising:

• storing one or more pieces of use restriction definition information in which at least use restriction conditions to restrict the use of the contents are defined;
• monitoring writing of an access log, and when the access log is written, comparing a use manner in which content specified by the access log is used and the use restriction conditions included in the use restriction definition information;
• and
• if a result of the comparing by the comparison unit indicates that the use manner meets any of the use restriction conditions, restricting at least a same kind of use as the use manner.